September weather forecast
Orchid Island, Taiwan

In September, the weather undergoes a gradual transition towards cooler conditions. Despite the onset of autumn, a high rainfall volume of 384mm (15.12") persists, distinguishing this month as the rainiest period. The sea temperatures start to decline gradually, indicating the approach of winter. The hours of sunshine begin to reduce as the daylight hours shorten. The UV index drops to 11, but caution against overexposure to the sun is still urged.

Temperature

Orchid Island measures an average high-temperature of a still moderately hot 28°C (82.4°F) in September, nearly consistent with the preceding month. Orchid Island notes an average temperature descent to a still warm 24°C (75.2°F) in September, a small shift from its daytime peak.

Rainfall

The month with the most rainfall is September, when the rain falls for 20 days and typically aggregates up to 384mm (15.12") of precipitation.

Sea temperature

June through September, with an average sea temperature of 29°C (84.2°F), are months with the warmest seawater in Orchid Island, Taiwan.
Note: Water temperatures ranging between 25°C (77°F) and 29°C (84.2°F) are regarded as very warm, making swimming, diving, and similar water activities pleasurable for extended periods.

Daylight

In Orchid Island, the average length of the day in September is 12h and 17min.
On the first day of September, sunrise is at 05:36 and sunset at 18:10. On the last day of the month, sunrise is at 05:44 and sunset at 17:42 CST.

Sunshine

The average sunshine in September is 5h.

UV index

In Orchid Island, Taiwan, the average daily maximum UV index in September is 11. A UV Index of 11, and more, symbolizes an ultimate health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index of 11 in September interprets into the following recommendations:
Undertake all critical precautions. Protection from sun harm is vital. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Opt for tightly woven and loose clothing to enhance protection from the Sun. Despite the overcast weather, sunscreen with SPF of at least 30 should be applied liberally and reapplied often, particularly after swimming or an outdoor workout. Heed this! UV intensity is much stronger when reflected off sand and water.